GB1095135A - A magnetic recording process - Google Patents

A magnetic recording process

Info

Publication number
GB1095135A
GB1095135A GB7329/65A GB732965A GB1095135A GB 1095135 A GB1095135 A GB 1095135A GB 7329/65 A GB7329/65 A GB 7329/65A GB 732965 A GB732965 A GB 732965A GB 1095135 A GB1095135 A GB 1095135A
Authority
GB
United Kingdom
Prior art keywords
magnetizable
recording
curie point
feb
recorded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB7329/65A
Other languages
English (en)
Inventor
Joachim Greiner
Wolfgang Eichier
Friedrich Drones
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert NV
Original Assignee
Agfa AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agfa AG filed Critical Agfa AG
Publication of GB1095135A publication Critical patent/GB1095135A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/16—Layers for recording by changing the magnetic properties, e.g. for Curie-point-writing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70636—CrO2
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/86—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers
    • G11B5/865—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers by contact "printing"

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
GB7329/65A 1964-02-29 1965-02-19 A magnetic recording process Expired GB1095135A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964A0045360 DE1449692B2 (de) 1964-02-29 1964-02-29 Magnetisches aufzeichnungsverfahren

Publications (1)

Publication Number Publication Date
GB1095135A true GB1095135A (en) 1967-12-13

Family

ID=6934681

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7329/65A Expired GB1095135A (en) 1964-02-29 1965-02-19 A magnetic recording process

Country Status (6)

Country Link
US (2) US3364496A (ja)
BE (1) BE660323A (ja)
CH (1) CH433796A (ja)
DE (1) DE1449692B2 (ja)
FR (1) FR1451260A (ja)
GB (1) GB1095135A (ja)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB963102A (en) * 1962-04-02 1964-07-08 Hitachi Ltd Improvements relating to the duplication of magnetic recordings
DE1473353A1 (de) * 1964-12-08 1968-12-19 Agfa Gevaert Ag Magnetographieverfahren
US3566786A (en) * 1965-01-29 1971-03-02 Helmut Taufer Image producing apparatus
US3496304A (en) * 1966-12-05 1970-02-17 Magnavox Co Double transfer curie-point and magnetic bias tape copy system
US3541577A (en) * 1967-06-28 1970-11-17 Bell & Howell Co Method of curie point recording
US3626114A (en) * 1969-03-10 1971-12-07 California Inst Of Techn Thermomagnetic recording and magneto-optic playback system
US3632898A (en) * 1969-06-16 1972-01-04 Memorex Corp Thermomagnetic copying of magnetic records with cooling of copy medium carrier
US3610721A (en) * 1969-10-29 1971-10-05 Du Pont Magnetic holograms
JPS5125139B1 (ja) * 1970-11-06 1976-07-29
JPS5125141B1 (ja) * 1970-11-13 1976-07-29
US3824617A (en) * 1971-04-16 1974-07-16 Matsushita Electric Ind Co Ltd Magnetic tape copying apparatus
US3777075A (en) * 1971-09-17 1973-12-04 Cons Video Systems High speed thermal duplication of magnetic tape
US3725611A (en) * 1971-09-30 1973-04-03 P Smaller Double coated storage medium for contact transfer recording
JPS5311372B2 (ja) * 1973-05-11 1978-04-21
NL7307626A (ja) * 1973-06-01 1974-12-03
CA1076251A (en) * 1975-04-18 1980-04-22 Mitsuaki Ono Magnetic tape copying method and apparatus
FR2554626A1 (fr) * 1983-11-08 1985-05-10 Oreshkin Valery Procede d'obtention d'une matrice pour le tirage d'un enregistrement magnetique, matrice obtenue par ledit procede, procede de tirage d'un enregistrement magnetique au moyen de cette matrice, et porteur d'enregistrement magnetique comportant l'enregistrement obtenu par ledit procede de tirage
DE3541293A1 (de) * 1985-11-22 1987-05-27 Joachim Dr Greiner Loeschverfahren fuer magnetische, bewegte, flaechige informationsspeicher
AU660986B2 (en) * 1991-07-19 1995-07-13 Hightree Media Corporation Tape duplicating system
US5507067A (en) 1994-05-12 1996-04-16 Newtronics Pty Ltd. Electronic vacuum cleaner control system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2738383A (en) * 1948-06-21 1956-03-13 Minnesota Mining & Mfg Method and apparatus for duplicating magnetic recordings and magnetic tape record members
US2915594A (en) * 1954-06-01 1959-12-01 Rca Corp Magnetic recording system

Also Published As

Publication number Publication date
BE660323A (ja) 1965-08-26
US3364496A (en) 1968-01-16
CH433796A (de) 1967-04-15
DE1449692B2 (de) 1971-04-01
DE1449692A1 (de) 1969-12-18
USRE28290E (en) 1974-12-31
FR1451260A (fr) 1966-01-07

Similar Documents

Publication Publication Date Title
GB1095135A (en) A magnetic recording process
US2411849A (en) Magnetic recorder head
GB1117872A (en) Magnetic signal-storage media
ES408374A1 (es) Perfeccionamientos introducidos en una cabeza de registro con un elemento magnetorresistivo para leer o escribbir so- bre un medio immantable.
GB1439213A (en) Method of making magnetic recordings which cannot be altered without it being noticed and magnetic recording media
GB996606A (en) Method of preparing a magnetic record member
FR1227533A (fr) Perfectionnements apportés aux têtes transductrices électromagnétiques et aux systèmes pour l'enregistrement et la reproduction de signaux électriques enregistrés magnétiquement
US3725611A (en) Double coated storage medium for contact transfer recording
GB991637A (en) Improvements relating to electromagnetic transducers
ES389787A1 (es) Un sistema de registro que incluye una cabeza transductora y los medios de transporte necesarios para desplazar un me- dio magnetico de registro ante la mencionada cabeza.
GB1213169A (en) Improvements in or relating to methods of magnetic recording
GB1046085A (en) An information carrier for carrying information magnetically recorded thereon
GB1440514A (en) Method of copying recorded magnetic signals
US3654163A (en) Cobalt ferrite magnetic powder for tape recording
GB830736A (en) An improved magnetic recording and reproducing method and an apparatus for carrying out such method
US2528261A (en) Apparatus for magnetic recording
SU429453A1 (ru) Носитель магнитной записи
GB1013862A (en) Electromagnetic transducer head
JPS55113114A (en) Magnetic memory unit
AU441271B2 (en) Cobalt oxide modified acicular iron oxide particles for magnetic recording tape
AU5063969A (en) Cobalt oxide modified acicular iron oxide particles for magnetic recording tape
GB1373390A (en) Manganese-zinc ferrites for magnetic heads
GB1090917A (en) Magnetic reco rding material
GB1323093A (en) Magnetic recording method
CA912808A (en) Cobalt oxide modified acicular iron oxide particles for magnetic recording tape